The report, completed last year by the Association of Chief Police Officers after an investigation named Operation Acumen, found a further 4,128 women from eastern Europe, which they categorised as "vulnerable".

This is not immediately evident from her photo, but in a country in which a perma-tanned former prime minister is categorised as white, and many pretty pallid mixed-race people, including a friend of mine I always thought was white until she told me she was black, are always categorised in line with their darker parent, it's regarded as important.

There's a long tradition amongst Sydney's indigenous Australians to produce beautiful shell - craft pieces; mirrors, boxes, anything that can be covered or bordered - the elder ladies pass this down to their daughters and grandaughters, taking great care to use only the best shells, assiduously collected and categorised.